Hello there! By chance are you on Windows and trying to configure a site with Apache? If so then you may be running into this recent bug: Unable to upload media files on Windows when using Apache - #12 by austinwendt
Hello there! By chance are you on Windows and trying to configure a site with Apache? If so then you may be running into this recent bug: Unable to upload media files on Windows when using Apache - #12 by austinwendt